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RE: [EnergyPlus_Support] Re: Add/Change Natural ventilation model





Here are lines used to calculate the ventilation flow rate for the ZoneVentilation:WindandStackOpenArea object, extracted from HVACManager.f90.

 

       Qw = Cw*Ventilation(J)%OpenArea*GetCurrentScheduleValue(Ventilation(J)%OpenAreaSchedPtr)*WindExt

       Qst = Cd*Ventilation(J)%OpenArea*GetCurrentScheduleValue(Ventilation(J)%OpenAreaSchedPtr)* &

            SQRT(2*9.81*Ventilation(J)%DH*ABS(TempExt-ZMAT(NZ))/(ZMAT(NZ)+273.15))

       VVF  = SQRT(Qw*Qw + Qst*Qst)

 

Hope this helps.

 

Lixing

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of HJ
Sent: Wednesday, October 10, 2012 11:01 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Re: Add/Change Natural ventilation model

 






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